If you mean 'last changed', you have a chance at a solution. If a file was modified on 26.12.2011, you cannot tell if it was also modified during your given range. (Unless you have a very exotic file system.)
–
William PursellJan 17 '12 at 2:07

find can take an ISO formatted datetime, so for a server on UTC for instance, you could specify an offset of a number of hours from wherever you are. This also takes care of having to add a day since you're comparing time too: